What time is 01:39?


Solution

01:39 = 1:39 AM

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01:39 is 1:39 AM on a 12-hour clock and "01:39 Hours" in Military Time. We use this system throughout the world (not just the military) and leverages a 24-hour time clock rather than the 12-hour AM/PM system known to most English-speaking countries. Below are ways to convert 01:39 through a time chart, automated calculator, and ways to convert by hand.

24-hour format 12-hour format
01:39 1:39 AM

01:39 conversion cheat sheet & time chart

A quick cheatsheet for all time conversions like 1:39 AM. Click the clock. Select your time. We'll highlight the row for the time you choose.

Morning Hours

Military Time Regular Time 24-Hour Time
0000 12:00 AM 00:00
0100 01:00 AM 01:00
0200 02:00 AM 02:00
0300 03:00 AM 03:00
0400 04:00 AM 04:00
0500 05:00 AM 05:00
0600 06:00 AM 06:00
0700 07:00 AM 07:00
0800 08:00 AM 08:00
0900 09:00 AM 09:00
1000 10:00 AM 10:00
1100 11:00 AM 11:00

Afternoon Hours

Military Time Regular Time 24-Hour Time
1200 12:00 PM 12:00
1300 01:00 PM 13:00
1400 02:00 PM 14:00
1500 03:00 PM 15:00
1600 04:00 PM 16:00
1700 05:00 PM 17:00
1800 06:00 PM 18:00
1900 07:00 PM 19:00
2000 08:00 PM 20:00
2100 09:00 PM 21:00
2200 10:00 PM 22:00
2300 11:00 PM 23:00

How to convert 01:39 from 24-Hour Time to 12-Hour Standard Time

It is easy to convert from 24-hour time to 12-hour time once you know a few tricks. The primary difference between the two is that the hours in a 24-hour clock go all the way up to 23 (from 0 to 23). In a 12-hour clock, the hour resets to 1 after noon (midday). Follow the steps below to convert 01:39 to 12-hour time.

  1. First, determine whether or not 1 is greater than 12 (recall that this is one of the distinctions of the 12-hour clock, there are no hours "greater" than 12 on it)
  2. Since 1 is lower than 12, there isn't much to do! We can just add the "AM" designation to the end of the time: 1:39 AM

DID YOU KNOW?


24-hour time is used in aviation, military, meteorology, logistics, and other fields. The 12-hour clock is only used in 18 countries globally, including the United States and Canada. 24-hour time and military time are very similar! See our military time converter for more information.

1 Hour Conversion Chart

24 Hour Clock 12 Hour Clock (AM/PM) Military Time
01:39 1:39 0139
01:44 1:44 0144
01:49 1:49 0149
01:54 1:54 0154
01:59 1:59 0159
02:04 2:04 0204
02:09 2:09 0209
02:14 2:14 0214
02:19 2:19 0219
02:24 2:24 0224
02:29 2:29 0229
02:34 2:34 0234
02:39 2:39 0239
02:44 2:44 0244
02:49 2:49 0249
02:54 2:54 0254